Check out Burley's trailers at http://burley.com/products/trailers/ The Nomad and the Flatbed are their cargo trailers. Several people on this forum seem to love their Nomads. But the Flatbed is cheaper and might be a good choice if you're going to haul coolers and oversized fishing poles.

Myself, I've been trying to decide between a Nomad and a Flatbed for awhile. A few days ago I finally ordered a Nomad -- I'm a city dweller and I wanted the narrower wheelbase. But I do love the sturdy, utilitarian look of the Flatbed! I'll post something when I've received my Nomad and had a chance to try it out.